Fastener lock



May 1931-- L. F. MOTT 1,804,839

FASTENER LOCK Filed Ap ril 16, 1929 l aientecl May 12, 1931 UNITED STATES" LYNIDON F. MOTT, F HOUSTON, TEXAS FASTENER LOCK Application filed. April 16, 1929. Serial No. 355,537.

for locking said hook against displacement from said eye.

WVith the above and other objects in view this invention has particular relation to certain novel features of construction, arrangement of parts and use, an example of which is givenin the specification and illustrated in the accompanying drawings, wherein Figure 1 shows a transverse sectional view of a window casing and screen, showing the device applied thereto in unlocked position.

Figure 2 shows a fragmentary View thereof showing the device in locked position, and

Figure 3 shows a side elevation of the device.

Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures the numeral 1 designates a window casing, having the outside bottom ledge 2. The numeral 3 designates a window screen hinged at its upper end to the window casing and provided to protect the Window. Screwed into the ledge 2, and upstanding therefrom there is screw-eye '4, and screwed into the inner side of the bottom of the 40 screen frame there is a screw eye 5. There is a hook 6 one end of which has a ring 7 linked into the eye 5 and the other end of said hook is engageable through the eye 4. The screw eye 4 has a locking arm 8 which is formed integrally therewith and which extends outwardlycat substantially right angles to the plane of said eye 4, and whose free end is slightly upwardly curved. When the hook is engaged in the eye 4 the arm may be swung around, a quarter turn, underneath the hook 6 and its free end engaged in the ring 7, thereof, as shown in Figure 2 and this turning of said arm will cause a partial turn of the eye 4 so as to engage it over said hook 6 in such a manner that the hook cannot be unhooked from said eye 4.

The screen will thus be locked in fastened position and cannot be released from the outside by jarring the screen or by inserting an implement through said screen, and burglaries will thus, in many cases, be prevented.

When it is desired to open the screen the arm 8 may be released from said hook ring, from the inside of the house, and swung around to original position, and this will turn the eye 4 so that the hook 6 can be readily released therefrom to permit the screen to be opened.

The drawings and description disclose a preferred form of the invention, by way of illustration, while the broad principle of the invention will be defined by the appended claims.

What I claim is:

1. A window screen fastener including a screw eye adapted to be secured to a window casing, a hook secured to the screen frame and engageable in said eye, an arm carried by the eye and through which the eye may be partially turned into position to interengage with the hook to prevent the disengagement of the hook from said eye, said arm being engageable with said hook, when said eye is so turned, to maintain said eye in engagement with said hook.

2. A fastener for screens and the like including a screw eye attached to one of two parts to be secured together and a hook attached to the other part, and engageable in said eye, an arm attached to said eye and turnable with the eye into substantially parallel relation with the hook, to efieet the movement of said eye into interlocking relation with the hook.

3. A fastener for screens and the like comprising an eye to be attached to one of two parts to be secured together, a hook to be secured to the other part and engageable in said eye and a yieldable extension integral with the eye through which eye may be turned into interlocking relation with the hook.

In testimony whereof I have signed my name to this specification.

LYNDON F.. Mom. 

